The Solar System

                                 THE SOLAR SYSTEM

• Solar System is a part of the Milky way.

• It contains the Sun, eight planets around, Asteroids, Meteoroids, Comets, Satellites, dust particles, air, etc.

• The sun is at the centre. This is the nearest star to the earth.

• Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune are the eight planets in order from the Sun.

• The Path of a planet is called Orbit.

• Planets revolves around the sun.

• Mercury and Venus are known as the Inferior Planets because their orbits are found between the Sun and the Earth.

• Mars, Jupiter, Saturn, Uranus and Neptune are known as Superior Planets, because their orbits are beyond the earth.

• Jupiter is the largest planet in the solar system.

• Satellite is a celestial body which revolves around a planet.

• There are 181 known satellites found in the solar system.

• Asteroids lie between the orbits of Mars and Jupiter. They revolve around the sun.

• Asteroids are called Planetoids or Minor Planets.

• It is believed that there are about 50,000 asteroids.

• Mercury, Venus, Earth and Mars are known as Inner Planets.

• Jupiter, Saturn, Uranus and Neptune are outer planets because they lie beyond the asteroid belt.

• The Inner Planets are known as Terrestrial Planets while the Outer Planets are called Jovian Planets.

• The Kuiper Belt lies beyond the orbit of Neptune which composed of frozen ices.

• Halley's comet is a notable comet. It appears once for every 75 years. It appeared in 1986 and expecting to be appeared in 2061.

• Meteors are called as Shooting Stars.

• Fallen meteors are called as Meteorites.

• Geologists believe that the Barringer Crater in Arizona created by a meteorite about 5,000 years back.

• Pluto is the Dwarf Planet.

• in 2006 Pluto relegated to the status of dwarf planet by International Astronomical Union, because Pluto has not cleared its neighbourhood or orbit.